Power battery top cover

Abstract

The utility model relates to the technical field of power batteries, and discloses a power battery top cover which comprises a top cover body, a liquid injection opening is formed in the top cover body, a liquid injection opening plug is fixedly connected in the liquid injection opening in a sleeved mode, and the upper end and the lower end of the liquid injection opening plug penetrate to the upper side and the lower side of the top cover body. The liquid injection port plug comprises a plug body which is fixedly sleeved with the liquid injection port, the upper end of the plug body is movably sleeved with an adjusting piece, and an on-off assembly is installed in the plug body; the on-off assembly comprises a dust receiving cover connected into the plug body in a threaded and sleeved mode. Due to the arrangement of the adjusting piece, the dust receiving cover can be driven to move up and down through the connecting ring and the positioning sliding block when the adjusting ring rotates under the matching of the positioning sliding groove and the positioning sliding block, so that the sealing blocking strip can be close to or far away from the clamping groove, and the purpose of blocking or penetrating through the filter residue bulge is achieved; therefore, the dust collecting cover can be ensured to be disconnected and connected, and the purpose of liquid injection or liquid injection port plugging is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and more specifically, to a power battery top cover. Background Art

[0002] The power battery includes a number of battery cells, a busbar assembly that connects the battery cells in parallel, and a pair of poles that electrically connect the busbar assembly and transmit electrical energy. Liquid substances such as electrolyte are injected into the power battery, and the power battery needs to maintain its sealing. In order to maintain the sealing, the power battery includes an outer shell and a top cover that closes the outer shell.

[0003] The top cover of the power battery mainly includes a pole, an explosion-proof valve, a liquid filling port and a sealing assembly; the existing liquid filling port has a simple structure and cannot prevent foreign matter in the battery liquid from entering the interior of the power battery shell with the battery liquid, and its independently arranged sealing plug structure is very easy to be contaminated with dust after being removed, which not only affects the internal battery liquid, but also is carried to the liquid filling port and may affect the connection sealing of the two, thereby causing possible leakage, so it needs to be improved. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a power battery top cover.

[0005] To achieve the above object, the utility model provides the following technical solution: a power battery top cover, comprising a top cover, the top cover is provided with a liquid injection port, a liquid injection port plug is fixedly sleeved in the liquid injection port, and the upper and lower ends of the liquid injection port plug penetrate to the upper and lower sides of the top cover;

[0006] The liquid injection port plug includes a plug body fixedly sleeved in the liquid injection port, an adjusting member is movably sleeved on the upper end of the plug body, and a disconnection component is installed inside the plug body;

[0007] The disconnecting assembly includes a dust collecting hood threadedly sleeved inside a plug body, a sealing hood movably sleeved inside the plug body and located at the bottom of the dust collecting hood, a filter residue protrusion is provided at the bottom of the inner cavity of the dust collecting hood, a groove is provided at the bottom of the filter residue protrusion, a sealing strip is provided at the bottom of the inner cavity of the sealing strip, and the top of the sealing strip is tightly fitted with the filter residue protrusion through the groove.

[0008] As a preferred technical solution of the utility model, the top cover is also provided with poles and explosion-proof valves, the poles are distributed at both ends of the top cover, and the explosion-proof valve and the liquid injection port plug are arranged between the two poles.

[0009] As a preferred technical solution of the utility model, the plug body includes a mounting sleeve fixedly sleeved in the liquid injection port, a plurality of evenly distributed positioning grooves are provided on the side of the mounting sleeve, and a positioning slider is slidably engaged inside the positioning groove.

[0010] As a preferred technical solution of the utility model, the adjusting member includes an adjusting ring movably sleeved on the upper end of the mounting sleeve, the internal thread of the adjusting ring is sleeved with a connecting ring, the connecting ring is movably sleeved on the surface of the mounting sleeve, and a pull groove is provided on the top of the adjusting ring.

[0011] As a preferred technical solution of the utility model, the sealing strip is an elastic structure, and the sealing strip is embedded in the slot and matched with the filter residue protrusion.

[0012] As a preferred technical solution of the present invention, the inner side of the positioning slider passes through the positioning slot and extends to the inner side of the mounting sleeve and is fixedly connected to the blocking cover, and the outer side of the positioning slider passes through the positioning slot and extends to the outer side of the mounting sleeve and is fixedly connected to the connecting ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. Due to the setting of the adjusting part, the utility model ensures that when the adjusting ring rotates, the dust collecting hood can be driven to move up and down through the connecting ring and the positioning slide block under the cooperation of the positioning slide groove and the positioning slide block, so that the sealing blocking strip can be close to or away from the card slot, thereby achieving the purpose of blocking or penetrating the filter residue protrusion, which can ensure that the dust collecting hood can achieve the effect of disconnection, thereby achieving the purpose of injecting or blocking the injection port.

[0015] 2. Due to the provision of the dust hood of the utility model, the filter residue protrusion provided at the bottom thereof can filter dust and impurities during the injection period. If obvious stains are found on the dust hood after the injection is completed, the dust hood can be rotated to be taken out from the inside of the installation sleeve, so that it can be cleaned to avoid secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the liquid injection port plug of the utility model;

[0018] Figure 3 It is a cross-sectional view of the front side of the liquid injection port plug of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the blocking cover of the utility model;

[0020] Figure 5This is a schematic diagram of the structure of the dust collecting hood of the utility model;

[0021] Figure 6 It is a structural schematic diagram of the bottom of the dust collecting hood of the utility model.

[0022] In the figure: 1, top cover; 2, pole; 3, explosion-proof valve; 4, liquid filling port plug; 41, plug body; 411, mounting sleeve; 412, positioning slide groove; 413, positioning slide block; 42, adjusting member; 421, adjusting ring; 422, connecting ring; 423, pull groove; 43, disconnect assembly; 431, dust collecting cover; 432, filter residue protrusion; 433, card slot; 434, plugging cover; 435, sealing plugging strip. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figures 1 to 5 As shown, the utility model provides a power battery top cover, including a top cover 1, a liquid injection port is opened on the top cover 1, a liquid injection port plug 4 is fixedly sleeved in the liquid injection port, and the upper and lower ends of the liquid injection port plug 4 penetrate the upper and lower sides of the top cover 1;

[0025] The liquid injection port plug 4 includes a plug body 41 fixedly sleeved in the liquid injection port, an adjusting member 42 is movably sleeved on the upper end of the plug body 41, and a disconnection assembly 43 is installed inside the plug body 41; due to the setting of the adjusting member 42, the rotating adjusting member 42 can drive the disconnection assembly 43 to move up and down through the plug body 41, so that the sealing plugging strip 435 can be close to or away from the card groove 433, thereby achieving the purpose of sealing or penetrating the filter residue protrusion 432, and ensuring that the dust cover 431 can achieve the disconnection effect, thereby achieving the purpose of liquid injection or blocking the liquid injection port;

[0026] The disconnecting assembly 43 includes a dust collecting hood 431 threadedly sleeved inside the plug body 41, a sealing hood 434 located at the bottom of the dust collecting hood 431 movably sleeved inside the plug body 41, a filter residue protrusion 432 is provided at the bottom of the inner cavity of the dust collecting hood 431, a card slot 433 located at the bottom of the filter residue protrusion 432 is provided at the bottom of the dust collecting hood 431, a sealing plugging strip 435 is provided at the bottom of the inner cavity of the sealing hood 434, and the top of the sealing plugging strip 435 is tightly fitted with the filter residue protrusion 432 through the card slot 433; due to the provision of the dust collecting hood 431, the filter residue protrusion 432 provided at its bottom can filter dust and impurities during injection, and if obvious stains are found on the dust collecting hood 431 after the injection is completed, the dust collecting hood 431 can be rotated so that it can be taken out from the inside of the mounting sleeve 411, so that it can be cleaned to avoid secondary pollution.

[0027] The top cover 1 is also provided with poles 2 and explosion-proof valves 3 . The poles 2 are distributed at both ends of the top cover 1 . The explosion-proof valve 3 and the liquid injection port plug 4 are arranged between the two poles 2 .

[0028] Among them, the plug body 41 includes a mounting sleeve 411 fixedly sleeved in the injection port, and a plurality of evenly distributed positioning grooves 412 are opened on the side of the mounting sleeve 411, and a positioning slider 413 is slidably engaged inside the positioning groove 412; due to the setting of the positioning groove 412 and the positioning slider 413, the movement of the connecting ring 422 can be restricted, ensuring that the connecting ring 422 can be driven up and down to move when the adjusting ring 421 rotates, and then the blocking cover 434 is driven up and down through the positioning slider 413.

[0029] The adjusting member 42 includes an adjusting ring 421 movably sleeved on the upper end of the mounting sleeve 411 , the inner thread of the adjusting ring 421 is sleeved with a connecting ring 422 , the connecting ring 422 is movably sleeved on the surface of the mounting sleeve 411 , and a pull groove 423 is provided on the top of the adjusting ring 421 .

[0030] Among them, the sealing strip 435 is an elastic structure, which is embedded in the slot 433 and matched with the filter residue protrusion 432; due to the elastic performance of the sealing strip 435, after it rises with the sealing cover 434, it can be tightly attached to the bottom of the filter residue protrusion 432 through the slot 433, ensuring that the filter residue protrusion 432 remains in a disconnected state.

[0031] Among them, the inner side of the positioning slider 413 passes through the positioning slot 412 and extends to the inner side of the mounting sleeve 411 and is fixedly connected to the blocking cover 434, and the outer side of the positioning slider 413 passes through the positioning slot 412 and extends to the outer side of the mounting sleeve 411 and is fixedly connected to the connecting ring 422.

[0032] The working principle and use process of this utility model:

[0033] The liquid injection port plug 4 is installed as a whole into the liquid injection port through the installation sleeve 411, and then the adjusting ring 421 is rotated through the slot 423. Since the rotation of the adjusting ring 421 can drive the connecting ring 422, and since the plurality of groups of positioning slots 412 and the positioning slider 413 cooperate to restrict the connecting ring 422, the adjusting ring 421 drives the connecting ring 422 to move downward when rotating, and the downward movement of the connecting ring 422 can drive the blocking cover 434 to move downward through the positioning slider 413. Since the downward movement of the blocking cover 434 can keep the sealing blocking strip 435 inside the blocking cover away from the slot 433, the liquid injected into the dust collecting cover 431 can flow from the slot 433 to the sealing blocking strip 435 through the filter residue protrusion 432, and finally flow into the battery through the blocking cover 434;

[0034] During the injection process, the plug is always in the injection port, and will not be removed and placed randomly to be contaminated with dust. In addition, dust mixed in the liquid during injection and dust dropped during opening can be filtered by the filter protrusion 432 and remain in the dust collecting cover 431.

[0035] If obvious stains are found on the dust cover 431 after the injection, the dust cover 431 can be rotated to be taken out from the inside of the installation sleeve 411, so that it can be cleaned to avoid secondary contamination.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power battery top cover, comprising a top cover (1), characterized in that: The top cover (1) is provided with a liquid injection port, a liquid injection port plug (4) is fixedly sleeved in the liquid injection port, and the upper and lower ends of the liquid injection port plug (4) penetrate the upper and lower sides of the top cover (1); The liquid injection port plug (4) comprises a plug body (41) fixedly sleeved in the liquid injection port, an adjusting member (42) is movably sleeved on the upper end of the plug body (41), and a disconnecting assembly (43) is installed inside the plug body (41); The disconnecting assembly (43) comprises a dust collecting hood (431) threadedly sleeved inside the plug body (41); a sealing hood (434) located at the bottom of the dust collecting hood (431) is movably sleeved inside the plug body (41); a filter residue protrusion (432) is provided at the bottom of the inner cavity of the dust collecting hood (431); a clamping groove (433) located at the bottom of the filter residue protrusion (432) is provided at the bottom of the dust collecting hood (431); a sealing blocking strip (435) is provided at the bottom of the inner cavity of the sealing hood (434); and the top of the sealing blocking strip (435) is tightly fitted with the filter residue protrusion (432) through the clamping groove (433).

2. A power battery top cover according to claim 1, characterized in that: The top cover (1) is also provided with poles (2) and explosion-proof valves (3); the poles (2) are distributed at both ends of the top cover (1); and the explosion-proof valve (3) and the liquid injection port plug (4) are arranged between the two poles (2).

3. A power battery top cover according to claim 1, characterized in that: The plug body (41) comprises a mounting sleeve (411) fixedly sleeved in the liquid injection port, a plurality of evenly distributed positioning grooves (412) are provided on the side of the mounting sleeve (411), and a positioning slider (413) is slidably engaged inside the positioning groove (412).

4. A power battery top cover according to claim 3, characterized in that: The adjusting member (42) comprises an adjusting ring (421) movably sleeved on the upper end of the mounting sleeve (411); the inner thread of the adjusting ring (421) is sleeved with a connecting ring (422); the connecting ring (422) is movably sleeved on the surface of the mounting sleeve (411); and a pull groove (423) is provided on the top of the adjusting ring (421).

5. The power battery top cover according to claim 1, characterized in that: The sealing strip (435) is an elastic structure, and the sealing strip (435) is embedded in the slot (433) and is matched with the filter residue protrusion (432).

6. A power battery top cover according to claim 4, characterized in that: The inner side of the positioning slider (413) passes through the positioning slot (412) and extends to the inner side of the mounting sleeve (411) and is fixedly connected to the blocking cover (434); the outer side of the positioning slider (413) passes through the positioning slot (412) and extends to the outer side of the mounting sleeve (411) and is fixedly connected to the connecting ring (422).

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